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Breach and safety analysis of spills over water from large liquefied natural gas carriers

Luketa, Anay; Hightower, Marion M.; Attaway, Stephen W.

In 2004, at the request of the Department of Energy, Sandia National Laboratories (Sandia) prepared a report, ''Guidance on the Risk and Safety Analysis of Large Liquefied Natural Gas (LNG) Spills Over Water''. That report provided framework for assessing hazards and identifying approaches to minimize the consequences to people and property from an LNG spill over water. The report also presented the general scale of possible hazards from a spill from 125,000 m3 o 150,000 m3 class LNG carriers, at the time the most common LNG carrier capacity.

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TYPE SAND Report YEAR 2008
DOIOSTI

Exact results and field-theoretic bounds for randomly advected propagating fronts, and implications for turbulent combustion

Mayo, Jackson R.; Kerstein, Alan R.

One of the authors previously conjectured that the wrinkling of propagating fronts by weak random advection increases the bulk propagation rate (turbulent burning velocity) in proportion to the 4/3 power of the advection strength. An exact derivation of this scaling is reported. The analysis shows that the coefficient of this scaling is equal to the energy density of a lower-dimensional Burgers fluid with a white-in-time forcing whose spatial structure is expressed in terms of the spatial autocorrelation of the flow that advects the front. The replica method of field theory has been used to derive an upper bound on the coefficient as a function of the spatial auto-correlation. High precision numerics show that the bound is usefully sharp. Implications for strongly advected fronts (e.g., turbulent flames) are noted.

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TYPE Presentation YEAR 2008
OSTI
Results 77901–78000 of 99,299
Results 77901–78000 of 99,299